My 1997 Geo metro was making a small knocking / rattling sound when I went over gravel. It turns out it was my steering rack. Hopefully this video helps you diagnose your problem!
Just to clarify this is a manual rack with no power assist. Commonly found on older smaller vehicles. However checking this part of the rack for play will be similar for almost any vehicle.
Checkout Rockauto.com for parts!
![](https://s2.save4k.ru/pic/3FPK1De8si0/maxresdefault.jpg)